libgender/util.h

#ifndef UTIL_H
#define UTIL_H

#include <cmath>
#include <vector>
#include <list>
#include <map>
#include "callback.h"

using namespace std;

#include <GL/gl.h>

typedef int soffs; // 32 bit
typedef unsigned int uoffs;
#define OFFS_BITS 31
#define SOFFS_MIN (soffs)-(1 << (OFFS_BITS - 2))
#define SOFFS_MAX (soffs)+(1 << (OFFS_BITS - 2))
#define MAXEXTENT (1UL << (OFFS_BITS - 1))

#define GLFLOAT_MAX 1e30
#define GLFLOAT_MIN -1e30

struct vec3 {
  GLfloat x, y, z;
  vec3 () { };
  vec3 (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { };

  const vec3 operator -() const
  { return vec3 (-x, -y, -z); }
};

const vec3 normalize (const vec3 &v);
const vec3 cross (const vec3 &a, const vec3 &b);

inline const vec3 operator *(const vec3 &a, GLfloat s)
{
  return vec3 (a.x * s, a.y * s, a.z * s);
}

inline GLfloat dot (const vec3 &a, const vec3 &b)
{
  return a.x * b.x + a.y * b.y + a.z * b.z;
}

inline const GLfloat abs (const vec3 &v)
{
  return sqrtf (dot (v, v));
}

struct gl_matrix {
  GLfloat data[4][4];

  const GLfloat operator ()(int i, int j) const { return data[j][i]; };
  GLfloat &operator ()(int i, int j) { return data[j][i]; };

  void diagonal (GLfloat v);
  void clear () { diagonal (0.); };
  void identity () { diagonal (1.); };

  void print (); // ugly

  static const gl_matrix translation (const vec3 &v);
  static const gl_matrix rotation (GLfloat degrees, const vec3 &axis);

  gl_matrix () { };
  gl_matrix (GLfloat diag) { diagonal (diag); };
};

const gl_matrix operator *(const gl_matrix &a, const gl_matrix &b);
const vec3 operator *(const gl_matrix &a, const vec3 &v);

typedef vec3 point;

// a generic plane
struct plane {
  vec3 n;
  GLfloat d;

  GLfloat distance (const point &p) const
  {
    return dot (n, p) + d;
  }

  plane () { };
  plane (GLfloat a, GLfloat b, GLfloat c, GLfloat d);
};

struct sector {
  soffs x, y, z;

  sector (soffs x = 0, soffs y = 0, soffs z = 0) : x(x), y(y), z(z) { };

  void offset (int subindex, uoffs extent)
  {
    if (subindex & 1) x += extent;
    if (subindex & 2) y += extent;
    if (subindex & 4) z += extent;
  }
};

inline const sector translate (const sector &p, const sector &src, const sector &dst)
{
  sector r;

  r.x = p.x + (dst.x - src.x);
  r.y = p.y + (dst.y - src.y);
  r.z = p.z + (dst.z - src.z);

  return r;
}

void renormalize (sector &s, point &p);

struct colour {
  GLfloat r, g, b, a;
  colour (GLfloat r = 1., GLfloat g = 1., GLfloat b = 1., GLfloat a = 1.) : r(r), g(g), b(b), a(a) { };
};

struct texc {
  GLfloat s, t;
  texc () { };
  texc (GLfloat s, GLfloat t) : s(s), t(t) { };
};

struct box {
  sector a, b;

  box() { };

  void reset ()
  {
    a = sector (SOFFS_MAX, SOFFS_MAX, SOFFS_MAX);
    b = sector (SOFFS_MIN, SOFFS_MIN, SOFFS_MIN);
  }

  void add (const box &o);
  void add (const sector &p);
  void add (const point &p);
};

inline const box translate (const box &b, const sector &src, const sector &dst)
{
  box r;

  r.a = translate (b.a, src, dst);
  r.b = translate (b.b, src, dst);

  return r;
}

struct light {
  point p;
  colour c;
  GLfloat intensity;
  GLfloat radius;
};

struct material {
  colour diffuse, specular, emission;
  GLfloat shininess;
};

struct entity_base;
struct draw_context;

extern struct timer {
  static double now;
  static double diff;

  static void frame ();
  timer ();
} timer;

#define MAX_EVENT_TYPES 10
enum event_type { TIMER_EV };
struct event {
   event_type type;
};

typedef callback1<void, event&> event_cb;

class skedjuhlar {

   public:
// only 10 types for now
   private:
      vector <list<event_cb> > event_lists;
   
   public:
      skedjuhlar () {
         event_lists.resize (MAX_EVENT_TYPES, list<event_cb>());
      }
      
      void register_event_cb (const event_type &t, const event_cb &e) {
         event_lists[t].push_back (e);
      };
      void send_event (event &e) {
         list<event_cb> &l = event_lists[e.type];
         for (list<event_cb>::iterator it = l.begin (); it != l.end (); it++) {
            (*it)(e);
         }
      };
      /*
      void check_events () {
         while (!events.empty ()) {
            event &e = events.pop_front ();
            list<event_cb> &l = event_lists[e->name];
            for (list<event_cb>::iterator it = l.begin (); it !+ l.end (); it++) {
               (*it)(e);
            }
            delete e; // ugly slow? hai hai..... 183G
         }
      }
      */
};

extern skedjuhlar main_scheduler;

#endif

Revision:	1.12
Committed:	Mon Oct 4 23:44:54 2004 UTC (19 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.11:	+5 -6 lines
Log Message:	* empty log message *
#	Content
1	#ifndef UTIL_H
2	#define UTIL_H
3
4	#include <cmath>
5	#include <vector>
6	#include <list>
7	#include <map>
8	#include "callback.h"
9
10	using namespace std;
11
12	#include <GL/gl.h>
13
14	typedef int soffs; // 32 bit
15	typedef unsigned int uoffs;
16	#define OFFS_BITS 31
17	#define SOFFS_MIN (soffs)-(1 << (OFFS_BITS - 2))
18	#define SOFFS_MAX (soffs)+(1 << (OFFS_BITS - 2))
19	#define MAXEXTENT (1UL << (OFFS_BITS - 1))
20
21	#define GLFLOAT_MAX 1e30
22	#define GLFLOAT_MIN -1e30
23
24	struct vec3 {
25	GLfloat x, y, z;
26	vec3 () { };
27	vec3 (GLfloat x, GLfloat y, GLfloat z) : x(x), y(y), z(z) { };
28
29	const vec3 operator -() const
30	{ return vec3 (-x, -y, -z); }
31	};
32
33	const vec3 normalize (const vec3 &v);
34	const vec3 cross (const vec3 &a, const vec3 &b);
35
36	inline const vec3 operator *(const vec3 &a, GLfloat s)
37	{
38	return vec3 (a.x * s, a.y * s, a.z * s);
39	}
40
41	inline GLfloat dot (const vec3 &a, const vec3 &b)
42	{
43	return a.x * b.x + a.y * b.y + a.z * b.z;
44	}
45
46	inline const GLfloat abs (const vec3 &v)
47	{
48	return sqrtf (dot (v, v));
49	}
50
51	struct gl_matrix {
52	GLfloat data[4][4];
53
54	const GLfloat operator ()(int i, int j) const { return data[j][i]; };
55	GLfloat &operator ()(int i, int j) { return data[j][i]; };
56
57	void diagonal (GLfloat v);
58	void clear () { diagonal (0.); };
59	void identity () { diagonal (1.); };
60
61	void print (); // ugly
62
63	static const gl_matrix translation (const vec3 &v);
64	static const gl_matrix rotation (GLfloat degrees, const vec3 &axis);
65
66	gl_matrix () { };
67	gl_matrix (GLfloat diag) { diagonal (diag); };
68	};
69
70	const gl_matrix operator *(const gl_matrix &a, const gl_matrix &b);
71	const vec3 operator *(const gl_matrix &a, const vec3 &v);
72
73	typedef vec3 point;
74
75	// a generic plane
76	struct plane {
77	vec3 n;
78	GLfloat d;
79
80	GLfloat distance (const point &p) const
81	{
82	return dot (n, p) + d;
83	}
84
85	plane () { };
86	plane (GLfloat a, GLfloat b, GLfloat c, GLfloat d);
87	};
88
89	struct sector {
90	soffs x, y, z;
91
92	sector (soffs x = 0, soffs y = 0, soffs z = 0) : x(x), y(y), z(z) { };
93
94	void offset (int subindex, uoffs extent)
95	{
96	if (subindex & 1) x += extent;
97	if (subindex & 2) y += extent;
98	if (subindex & 4) z += extent;
99	}
100	};
101
102	inline const sector translate (const sector &p, const sector &src, const sector &dst)
103	{
104	sector r;
105
106	r.x = p.x + (dst.x - src.x);
107	r.y = p.y + (dst.y - src.y);
108	r.z = p.z + (dst.z - src.z);
109
110	return r;
111	}
112
113	void renormalize (sector &s, point &p);
114
115	struct colour {
116	GLfloat r, g, b, a;
117	colour (GLfloat r = 1., GLfloat g = 1., GLfloat b = 1., GLfloat a = 1.) : r(r), g(g), b(b), a(a) { };
118	};
119
120	struct texc {
121	GLfloat s, t;
122	texc () { };
123	texc (GLfloat s, GLfloat t) : s(s), t(t) { };
124	};
125
126	struct box {
127	sector a, b;
128
129	box() { };
130
131	void reset ()
132	{
133	a = sector (SOFFS_MAX, SOFFS_MAX, SOFFS_MAX);
134	b = sector (SOFFS_MIN, SOFFS_MIN, SOFFS_MIN);
135	}
136
137	void add (const box &o);
138	void add (const sector &p);
139	void add (const point &p);
140	};
141
142	inline const box translate (const box &b, const sector &src, const sector &dst)
143	{
144	box r;
145
146	r.a = translate (b.a, src, dst);
147	r.b = translate (b.b, src, dst);
148
149	return r;
150	}
151
152	struct light {
153	point p;
154	colour c;
155	GLfloat intensity;
156	GLfloat radius;
157	};
158
159	struct material {
160	colour diffuse, specular, emission;
161	GLfloat shininess;
162	};
163
164	struct entity_base;
165	struct draw_context;
166
167	extern struct timer {
168	static double now;
169	static double diff;
170
171	static void frame ();
172	timer ();
173	} timer;
174
175	#define MAX_EVENT_TYPES 10
176	enum event_type { TIMER_EV };
177	struct event {
178	event_type type;
179	};
180
181	typedef callback1<void, event&> event_cb;
182
183	class skedjuhlar {
184
185	public:
186	// only 10 types for now
187	private:
188	vector <list<event_cb> > event_lists;
189
190	public:
191	skedjuhlar () {
192	event_lists.resize (MAX_EVENT_TYPES, list<event_cb>());
193	}
194
195	void register_event_cb (const event_type &t, const event_cb &e) {
196	event_lists[t].push_back (e);
197	};
198	void send_event (event &e) {
199	list<event_cb> &l = event_lists[e.type];
200	for (list<event_cb>::iterator it = l.begin (); it != l.end (); it++) {
201	(*it)(e);
202	}
203	};
204	/*
205	void check_events () {
206	while (!events.empty ()) {
207	event &e = events.pop_front ();
208	list<event_cb> &l = event_lists[e->name];
209	for (list<event_cb>::iterator it = l.begin (); it !+ l.end (); it++) {
210	(*it)(e);
211	}
212	delete e; // ugly slow? hai hai..... 183G
213	}
214	}
215	*/
216	};
217
218	extern skedjuhlar main_scheduler;
219
220	#endif
221